450 4T Racing


Explosive horsepower developed from the most cutting edge technology bring the 450 SEF-R into life. Torque your way through the rev range with instant power on demand and plenty in reserve. Horsepower combined with the latest French ergonomics, technology and Brembo stopping power make the 450 SEF-R a machine not to be reckoned with.

100% new for 2015 the 450 uses the proven formulas from the brand’s low cubic capacity models. The chassis, while specific for housing the large motor, maintains the ergonomics of the 300 and 250 SEF. The frame is a development of the highly-reputed semi-perimeter Sherco frame in chromium molybdenum steel made of mechanically welded parts. An option selected by Sherco to offer a maneuverability/stability compromise perfectly suited to the highly diverse conditions that may be encountered in the enduro.

Sherco remains loyal to the equipment manufacturers with the best reputations: WP for suspensions, Brembo for brakes, and Trail Tech for the computer (with maintenance indicator). The next generation motor is more compact and higher-performance. The timing uses cascading pinion gears and chains. The selector drum is made of aluminum and the valves are steel for greater longevity and extreme enduro use.

Power is provided by the Synerject system, developed specifically by Sherco for more precisely governing idling and engine braking, and ensuring perfect progressivity in power delivery… The secret for effective enduro racing!

Key Features

Engine 4 stroke DOHC, 4 valve Sherco technology
Engine size 449.40 cc
Bore & Stroke 95 x 63.40 mm
Fuel system Synerject digital electronic fuel injection
Battery 12 V / 4Ah Yuasa
Cylinder lubrication
Cooling Liquid system with forced circulation
Start Unique electric starting system
Exhaust Stainless steel header pipe, aluminum muffler with catalytic converter meets Euro 3 stds.
Systeme Allumage
Transmission 6 speed sequential gearbox, primary gear drive chain secondary drive
Clutch Hydraulically activated multidisc in oil bath
Ignition Shihlin alternator 220 W
Frame Double cradle Chrome-Molybdenum design
Fuel Tank 8.5 Liter nylon fuel tank
Brakes Hydraulically activated Brembo Ø260 mm front and Ø220 mm rear
Front suspension Ø 48 mm (1.89 in ) tubes rebound and compression adjustable 300 mm (11.81 in) of travel WP telescopic fork
Rear suspension WP progressive, multiadjustable rear shock utilizing a linkage and rod system 330 mm (13 in) of travel
Rear shock absorber
Front wheel 1.60 x 21” aluminum rim, steel spokes and Michelin Enduro Competition tube type
Rear wheel 2.15 x 18” aluminum rim, steel spokes and Michelin Enduro Competition tube type
Weight 109 kg (240.3 lbs.)
Wheelbase 1490 mm (58.5 in)
Ground clearance 355 mm (13.78 in)
Seat height 950 mm (34.25 in)
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